Flight profile · American Airlines
AA548
Jacksonville (JAX) to Charlotte (CLT) · scheduled 5:00 AM – 6:26 AM
How AA548 performs
621 operations, July 2023 – May 2026.
AA548 arrived on time 95.1% of the time, against 79.0% for all JAX → CLT flights, so this departure is 16.1 percentage points better than the route as a whole. Against American Airlines’ own flights on this route it is 16.2 points better.
Source: US DOT Bureau of Transportation Statistics · 621 operations, July 2023 – May 2026 · If AA548 is cancelled or significantly changed, DOT’s automatic refund rule may entitle you to your money back. The refund checker walks through eligibility.
What stands out
How AA548 compares to other flight numbers, not just to itself.
This flight runs unusually far ahead of the carrier's own average on this route, better than 99% of 11,589 comparable flight numbers.
95.1% on time for this specific departure, against 78.9% for the same carrier's other flights on this route.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – May 2026 · The one thing about this specific departure that ranks most extreme against every other published flight number, out of everything FlyerIntel checks — shown only when something clears a real statistical bar, not for every flight.
Where AA548 is right now
A live reading, only if you ask for it. It is not part of the reliability record above.
Ask for the position of AA548 right now, if receivers on the ground are hearing it. Nothing is requested until you press the button.
Against the rest of the route
| Flight or route | On time | Cancelled | Median delay | Severe | Flights |
|---|---|---|---|---|---|
| AA548 | 95.1% | 1.45% | -14 min | 3.1% | 621 |
| American Airlines on JAX → CLT | 78.9% | 1.42% | -6 min | 7.7% | 6,756 |
| All JAX → CLT flights | 79.0% | 1.43% | -6 min | 7.7% | 6,766 |
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – May 2026
Why AA548 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding and fueling, all within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
Share of the delay minutes US DOT attributed to each cause for AA548 on JAX → CLT. Only delays of 15 minutes or more are attributed.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – May 2026
Does a late aircraft delay this flight?
How often the plane that flies AA548 comes in late, and what that does to the departure.
AA548 is usually the aircraft’s first flight of the day: the schedule gives it a median of 6.1 hours on the ground at JAX, so its “inbound” is mostly the aircraft’s arrival the evening before.
When the aircraft came in 15 or more minutes late, AA548 pushed back an average of 6 minutes late; when it came in on time or early, an average of 4 minutes late.
Each departure is matched to the flight the same aircraft flew into JAX just before it, using the tail number in the DOT file, 600 of 612 departures in all. A departure is left out when that flight is unknown, was cancelled or diverted, or the aircraft had sat for more than 12 hours. A flight the airline cancelled never left and is not in the count, and one flown by a substitute aircraft is matched to the aircraft that flew it, not to the one first planned.
Against the network at the same turn length
| Share of departures | Inbound landed 15+ late | Left 15+ late after a late inbound | Left 15+ late after an on-time inbound |
|---|---|---|---|
| AA548 | 33% | 8% | 4% |
| Network, same turn | 29% | 12% | 9% |
A night on the ground absorbs most of a late arrival, so a late inbound matters far less on a turn this long than on a same-day one.
The network row is every flight with a scheduled turn of 6 hours or more, usually overnight. How often AA548’s aircraft landed 15 or more minutes late is higher than the network’s and, once the aircraft was late, how often AA548 left 15 or more minutes late is lower than the network’s.
More: Which Flight Numbers Pay for a Late Aircraft lists the flight numbers that pass a late aircraft on.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – May 2026
From pushback to gate
When it leaves JAX late, does that still matter by the time it reaches CLT?
AA548 pushes back an average of 10.9 minutes late and reaches the gate at CLT an average of 2.2 minutes late. The 8.8 minutes between those two figures are slack the published schedule already carries, which is why a late pushback on this flight does not reliably become a late arrival. Its 13.6 minutes on the taxiways at JAX is about what any departure from the airport in that hour spends.
On arrival at CLT, AA548 spends 9.8 min taxiing from touchdown to the gate — ground time a connecting passenger sits through before they can even leave the aircraft, on top of however late the flight itself ran. That is 3.1 minutes shorter than a typical CLT arrival (12.8 min).
Departure delay is averaged over every pushback and arrival delay over every completed arrival, so the two counts differ by the flights that never reached CLT. Taxi-out is gate to wheels up and sits inside the scheduled block rather than on top of it; the comparison is 2,867 departures from JAX scheduled in the clock hour AA548 most often leaves in. Taxi-in is landing to gate, compared against every arrival FlyerIntel has on file at CLT (618,237 flights), not just AA548’s own. More on taxi time.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – May 2026
The hour it leaves JAX
Part of any flight’s record belongs to the clock rather than to the flight. AA548 has one departure time, so this is what that time is worth.
On-time arrival rate. 2,867 departures from JAX are scheduled in the 5 AM–6 AM hour over the period, against 90,308 across the whole day.
AA548 is scheduled out of JAX at 5:00 AM, in the 5 AM–6 AM bank. Departures from JAX in that hour arrive on time 93.6% of the time against 80.0% across the airport’s whole day — the slot alone is worth 13.6 points better before anything about this particular flight is considered.
The two airport figures cover every departure from JAX to every destination, so they describe the slot rather than this journey — the like-for-like comparison against the route is above. Hours are scheduled local, and a number whose schedule moved between banks inside the period has no single hour and is not described here at all. Why the hour matters.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – May 2026 · Hours below 120 departures are not scored.
Other routes AA548 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
| Route | Operated | Flights | On time |
|---|---|---|---|
| PHX→ONT Phoenix to Ontario | July 7, 2024 | 1 | — |
| DCA→JAX Washington to Jacksonville | October 5, 2023 – November 4, 2023 | 31 | — |
| LGA→BNA New York to Nashville | September 6, 2023 – October 4, 2023 | 21 | — |
| LGA→STL New York to St. Louis | August 15, 2023 – September 5, 2023 | 16 | — |
Because the same number has served different journeys, the statistics above describe only the route AA548 currently operates. Blending them would produce an average of two different flights.
When it goes wrong
The average describes a usual day. This is the day that ruins a connection.
0 min early
against a median of 14 min early
Percentiles over 621 operations; cancelled and diverted flights are counted separately.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – May 2026
Data and methodology
Calculated by FlyerIntel from 621 records of AA548 operating JAX → CLT, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.
Full methodology · Data sources · Report a problem
Related research: Most and Least Reliable Flight Numbers · The Delay You Inherit · Making Up Time in the Air
Analysis last recomputed